MCP73853IMF MICROCHIP [Microchip Technology], MCP73853IMF Datasheet - Page 12

• Manufacturer Part Number: MCP73853IMF
• Description: USB Compatible Li-Ion/Li-Polymer Charge Management Controllers
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 4-2:
Note 1:
Note 2:
Yes
Preconditioning Mode
Charge Current = I
Reset Safety Timer
Temperature OK
The qualification parameters are continuously
monitored throughout the charge cycle. For more
details on this, refer to Section 4.1 “Charge
Qualification and Preconditioning” .
The charge current will be scaled based on the
die temperature during thermal regulation. For
more details, refer to Section 4.5 “Thermal
Regulation” .
Safety Timer
V
BAT
Expired
Operational Flow Algorithm.
> V
No
No
PTH
No
STAT1 = Off
STAT2 = Flashing
Safety Timer Suspended
Charge Current = 0
PREG
Yes
Yes
Fault
Charge Current = 0
Reset Safety Timer
V
or EN Low
DD
< V
Yes
UVLO
No
STAT1 = Off
STAT2 = On
No
NOTE 2
NOTE 1
NOTE 1
Yes
Yes
Constant-current
Mode
Charge Current = I
Reset Safety Timer
Temperature OK
Temperature OK
V
V
Safety Timer
V
DD
BAT
BAT
Initialize
EN High
Expired
> V
= V
> V
Yes
Yes
Yes
No
No
UVLO
REG
PTH
No
STAT1 = Off
STAT2 = Flashing
Safety Timer Suspended
Charge Current = 0
REG
Yes
No
STAT1 = Off
STAT2 = Off
STAT1 = On
STAT2 = Off
No
STAT1 = Off
STAT2 = Flashing
Charge Current = 0
Yes
Constant-voltage Mode
Output Voltage = V
Safety Timer Suspended
Temperature OK
Elapsed Timer
Charge Current = 0
I
OUT
STAT1 = Flashing
Expired
< I
No
TERM
REG
No
Yes
Charge Termination
Charge Current = 0
Reset Safety Timer
V
V
or EN Low
DD
BAT
< V
< V
Yes
UVLO
RTH
No
STAT1 = Flashing
STAT2 = Off